Keystones — Lintel
Five GCSE retrieval questions · 9 March 2022 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.0052
Answer: 5.2 × 10-3 -
2. Algebra Factorising monic quadratics
Factorise: x² - 8x + 16
Answer: (x - 4)(x - 4) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 21cm, angle = 47°. Find opposite
Answer: 22.5cm -
4. Ratio Mixed ratio problems
£259.00 is shared between A and B in the ratio 5:2. How much does A receive?
Answer: £185.00 -
5. Statistics Mean
Calculate the mean of: 26, 28, 17, 8, 44, 31
Answer: 25.7